NAT PROBLEM

[smavashev]

2801 Router

SVI from 3550 192.168.20.0 0.0.0.255

ip dhcp pool

network 192.168.20.0 255.255.255.0

default-router 192.168.20.1

int fa0/0

ip nat inside

int fa0/1

ip nat outside

access-list 100 permit ip 192.168.20.0 0.0.0.255 any

ip nat inside source list 100 interface fa0/1 overload

****** the dhcp bindings are translating ****, nat is not translating - is there another way to configure a NAT statements ????

[cadet alain]

Hi,

on which device are you doing NAT? post output from:

-sh ip int br | exc una

- sh ip route

Regards.

Alain

Don't forget to rate helpful posts.

[smavashev]

I could not paste from output because it's on a different computer but I wrote it out.

NVI0                                                          unassigned                 NO            unset         up

Router# show ip route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

            67.0.0.0/8 us variably subnetted, 2 subnets, 2 masks

D            67.0.0.0/8 is a summary, 00:00:22, Null0

C            67.85.96.0/21 is directly connected, Fastethernet 0/1

D            192.168.20.0/24 [90/28416] via 10.1.1.2, 00:01:00, Fastethernet 0/0

               10.0.0.0/8 is variably subnetted, 2 subnets, 2 subnet masks

C                  10.1.1.0/24 is directly connected, Fastethernet 0/0

D                  10.0.0.0/8 is a summary, 00:00:22, Null0

S               167.206.195.6 [254/0] via 67.85.96., Fastethernet 0/1

S*            0.0.0.0 is directly connected, FastEthernet 0/1

Sh ip int brief

Interface                         IP address         Ok?     Method    Status

Fasthethernet 0/0            10.1.1.1             Yes     Manual      up

Fastethernet  0/1             67.85.101.117    Yes      NO            up

NVI0                                unassigned        NO      unset         up

[smavashev]

I'm doing the config on the 2801 Router, my svi LAN is 192.168.20.0

[cadet alain]

Hi,

can you modify your default route and configure it with next-hop instead of outgoing interface.

Regards.

Alain

Don't forget to rate helpful posts.

[smavashev]

I have changed my default route to 0.0.0.0 0.0.0.0 to fastethernet 0/0 if that was what you were reffering too, i also changed the default router on SVI to 10.1.1.1 .

10.1.1.1 is the Fa0/1 interfafce on 2801

But still no luck, is my NAT configuration correct ? maybe I can configure again from scratch. ???

[smavashev]

I'm sorry F0/0 is the 10.1.1.1 on 2801 router, and 10.1.1.2 is Fa0/9 switchport interface on 3550.

[cadet alain]

Hi,

you had something like this: ip route 0.0.0.0 0.0.0.0 f0/1 and you should change to something like this:

ip route 0.0.0.0 0.0.0.0 67.85.x.x  which is the ISP default gateway they gave you.

Regards.

Alain

Don't forget to rate helpful posts.